臭氧氧化二级出水有机物可生化性研究  

Research on the Organic Biodegradability of Secondary Effluent Treated by Ozonation

作　　者：杨岸明[1,2] 常江[2] 甘一萍[2] 彭永臻[1] 张树军[2] 孟春霖[2] 

机构地区：[1]北京工业大学北京市水质科学和水环境恢复工程重点实验室,北京100124 [2]北京城市排水集团有限责任公司,北京100063

出　　处：《环境科学》2010年第2期363-367,共5页Environmental Science

基　　金：北京市科技计划项目(D07050601500000);北京市教委科技创新平台项目(PXM2008-014204-050843)

摘　　要：通过臭氧氧化北京3个典型城市污水处理厂二级出水,考察臭氧对二级出水有机物可生化性的提高作用.采用批量试验方法,通过调整臭氧投加时间控制臭氧投加浓度为2、4、6、8、10 mg/L.结果表明,UV254与比紫外消光度SUVA(UV254/DOC)随臭氧投加量而降低,臭氧投加量为6 mg/L时,UV254与SUVA分别降低54.4%与56.6%以上;BOD5/COD、BDOC与BDOC/DOC分别提高30%、360%与360%以上,表明适当的臭氧投加量可提高二级出水难降解有机物的可生化性;三维荧光指纹光谱分析臭氧氧化前后二级出水中有机物的变化规律,表明该污水处理厂二级出水的荧光有机物主要为芳香族蛋白类物质和腐殖质类物质,臭氧可显著去除该类有机物.The secondary effluent of three WWTPs was treated by ozonation to investigate organic biodegradability enhancement. The bulk experimental method was used. Ozone adding dosage was controlled to be 2, 4, 6, 8, 10 mg/L by adjusting the adding time, Results showed, UV2s4and SUVA（UV254/DOC） decreased with the increasing of the ozone dosage. When ozone adding dosage was 6 mg/L, UV254 and SUVA decreased about 54.4% and 56.6% respectively; while BOD5/COD, BDOC and BDOC/DOC were improved above 30% ,360% and 360% respectively. It could be concluded that suitable ozonation could improve the biodegradation of the organic substances in the secondary effluent. The organic substance was analyzed by the excitation-emission matrix（EEM） to investigate the variation regularity of organic matter changes of the ozoned and non-ozoned secondary effluent. The main organic substances of the secondary effluent in the plant were aromatic protein like substances and humic substances, ozone could significantly remove these types of organic substance .

关 键 词：臭氧 二级出水 有机物 三维荧光指纹光谱 

分 类 号：X703.1[环境科学与工程—环境工程]